3-[4,5-dihydro-5-oxo-3-[4-[(1-oxooctadecyl)amino]phenyl]-1H-pyrazol-1-yl]benzenesulphonic acid

3-[[4,5-Dihydro-5-oxo-3-[4-[(1-oxooctadecyl)amino]phenyl]-1H-pyrazol]-1-yl]benzenesulfonic acid